ORIGIN OF SUBMARINE DUNES
نویسندگان
چکیده
منابع مشابه
Transverse instability of dunes.
The simplest type of dune is the transverse one, which propagates with invariant profile orthogonally to a fixed wind direction. Here we show, by means of numerical simulations, that transverse dunes are unstable with respect to along-axis perturbations in their profile and decay on the bedrock into barchan dunes. Any forcing modulation amplifies exponentially with growth rate determined by the...
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Transverse dunes appear in regions of mainly unidirectional wind and high sand availability. A dune model is extended to two dimensional calculation of the shear stress. It is applied to simulate dynamics and morphology of transverse dunes which seem to reach lateral invariance and do not stop growing. Hence, simulations of two dimensional dune fields have been performed. Characteristic laws we...
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Booming” sand dunes have a remarkable capacity to produce sounds that are comparable with those from a stringed instrument. This phenomenon, in which sound is generated after an avalanching of sand along the slip face of a dune, has been known for centuries and occurs in at least 40 sites around the world. A spectral analysis of the sound shows a dominant frequency between 70 and 110 Hz, as wel...
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Eric J. R. Parteli, Orencio Durán, Haim Tsoar, Veit Schwämmle and Hans J. Herrmann 1. Departamento de F́ısica, Universidade Federal do Ceará 60455-760, Fortaleza, CE, Brazil, 2. DelftChemTech, TU Delft, Julianalaan 136, 2628 BL Delft, The Netherlands 3. Department of Geography and Environmental Development, Ben Gurion Univ. of the Negev, Beer Sheva 84105, Israel 4. Instituto de F́ısica Teórica, U...
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Morphological features observed in both swath bathymetry and seismic reflection data are not unique, which introduces uncertainty as to their origin. The origin of features observed in the Humboldt Slide has generated much controversy because the same features have been interpreted as a submarine failure deposit versus current-controlled sediment waves. It is important to resolve this controver...
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ژورنال
عنوان ژورنال: Coastal Engineering Proceedings
سال: 1976
ISSN: 2156-1028,0589-087X
DOI: 10.9753/icce.v15.123